[Smilkers]

Earring of Essence drops in Droga, not Nurga.

Nurga is lower level, 30-40.
Droga is 40-50.

Your group should be able to invis all the way to Soothsayer room in Droga, but the break in will be a little rough (5 or 6 mobs in that room, not including 2 at the door). There's usually always a higher level player camping something in Droga though, so you could probably get help with the split fairly easily. Just ask in /ooc and keep up with your repops.